Thermal performance of multilayer insulation: A review

International Conference on Recent Advancements and Effectual Researches in Engineering Science and Technology

Sutheesh, P.M.^1 ; Chollackal, Alex^1

Department of Mechanical Engineering, St. Joseph's College of Engineering and Technology, Palai, Kerala, India^1

关键词: Anisotropic conductivity;    Effective thermal conductivity;    Multi-layer insulation;    Performance prediction;    Space exploration programs;    Thermal control;    Thermal Performance;    Thermal Protection System;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/396/1/012061/pdf
DOI  :  10.1088/1757-899X/396/1/012061

来源: IOP

【 摘 要 】

A multilayer insulation (MLI) is a passive thermal protection system used in cryogenics and space exploration programs as a thermal insulator. It is very thin and light weight. Due to less weight and higher thermal performance of MLI, it found application in space programs to store cryogenic liquid propellant. The effective thermal conductivity of MLI is in the order of 10-5 W/mK. The prediction of heat transfer in MLI is very complex due to the anisotropic conductivity and combination of radiation, gas conduction and solid conduction modes of heat transfer. This work is an attempt to gather some significant research outcome in MLI performance prediction and the factors to be considered while modeling the MLI.